base/process/process_handle_mac.cc

   1 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "base/process/process_handle.h"
   6
   7 #include <sys/sysctl.h>
   8 #include <sys/types.h>
   9
  10 #include "base/logging.h"
  11
  12 namespace base {
  13
  14 ProcessId GetParentProcessId(ProcessHandle process) {
  15   struct kinfo_proc info;
  16   size_t length = sizeof(struct kinfo_proc);
  17   int mib[4] = { CTL_KERN, KERN_PROC, KERN_PROC_PID, process };
  18   if (sysctl(mib, 4, &info, &length, NULL, 0) < 0) {
  19     DPLOG(ERROR) << "sysctl";
  20     return -1;
  21   }
  22   if (length == 0)
  23     return -1;
  24   return info.kp_eproc.e_ppid;
  25 }
  26
  27 }  // namespace base